Creating realistic plastic with parting lines?
Here is a way to do it, you could make the parting with a simple extrude (but you could as well do it with a Bump node). To make the plastic material you could mix a Diffuse with a Glossy node. To create the small wave bumps and the logo, use a MixRGB (Add mode) to mix a Wave texture with an Image Texture, and plug the MixRGB into the Normal sockets of the Diffuse and GLossy.